scholarly journals Bio-Inspired Dielectric Resonator Antenna for Wideband Sub-6 GHz Range

2020 ◽  
Vol 10 (24) ◽  
pp. 8826
Author(s):  
Luigi Melchiorre ◽  
Ilaria Marasco ◽  
Giovanni Niro ◽  
Vito Basile ◽  
Valeria Marrocco ◽  
...  
Keyword(s):  
Dielectric Resonator ◽  
Technological Development ◽  
High Gain ◽  
Geometrical Parameters ◽  
Dielectric Resonator Antenna ◽  
Frequency Range ◽  
Dielectric Resonator Antennas ◽  
Antenna Performance ◽  
Rapid Production ◽  
Manufacturing Technologies

Through the years, inspiration from nature has taken the lead for technological development and improvement. This concept firmly applies to the design of the antennas, whose performances receive a relevant boost due to the implementation of bio-inspired geometries. In particular, this idea holds in the present scenario, where antennas working in the higher frequency range (5G and mm-wave), require wide bandwidth and high gain; nonetheless, ease of fabrication and rapid production still have their importance. To this aim, polymer-based 3D antennas, such as Dielectric Resonator Antennas (DRAs) have been considered as suitable for fulfilling antenna performance and fabrication requirements. Differently from numerous works related to planar-metal-based antenna development, bio-inspired DRAs for 5G and mm-wave applications are at their beginning. In this scenario, the present paper proposes the analysis and optimization of a bio-inspired Spiral shell DRA (SsDRA) implemented by means of Gielis’ superformula, with the goal of boosting the antenna bandwidth. The optimized SsDRA geometrical parameters were also determined and discussed based on its fabrication feasibility exploiting Additive Manufacturing technologies. The results proved that the SsDRA provides relevant bandwidth, about 2 GHz wide, and satisfactory gain (3.7 dBi and 5 dBi, respectively) at two different frequencies, 3.5 GHz and 5.5 GHz.

scholarly journals T-Shaped Compact Dielectric Resonator Antenna for UWB Application

2019 ◽  
Vol 8 (3) ◽  
pp. 57-63
Author(s):  
A. Zitouni ◽  
N. Boukli-Hacene
Keyword(s):  
Dielectric Resonator ◽  
Ground Plane ◽  
Ultra Wideband ◽  
Impedance Bandwidth ◽  
Dielectric Resonator Antenna ◽  
Printed Antenna ◽  
Frequency Range ◽  
Radiation Characteristics ◽  
Antenna Structure ◽  
Antenna Performance

In this article, a novel T-shaped compact dielectric resonator antenna for ultra-wideband (UWB) application is presented and studied. The proposed DRA structure consists of T-shaped dielectric resonator fed by stepped microstrip monopole printed antenna, partial ground plane and an inverted L-shaped stub. The inverted L-shaped stub and parasitic strip are utilized to improve impedance bandwidth. A comprehensive parametric study is carried out using HFSS software to achieve the optimum antenna performance and optimize the bandwidth of the proposed antenna. From the simulation results, it is found that the proposed antenna structure operates over a frequency range of 3.45 to more than 28 GHz with a fractional bandwidth over 156.12%, which covers UWB application, and having better gain and radiation characteristics.

scholarly journals Radiation Characteristics Enhancement of Dielectric Resonator Antenna Using Solid/Discrete Dielectric Lenses

2015 ◽  
Vol 4 (1) ◽  
pp. 1 ◽  
Author(s):  
H. A. E. Malhat ◽  
S. H. Zainud-Deen ◽  
W. M. Hassan ◽  
K. H. Awadalla
Keyword(s):  
Dielectric Constant ◽  
Dielectric Resonator ◽  
Dielectric Material ◽  
High Gain ◽  
Dielectric Resonator Antenna ◽  
Spherical Lens ◽  
Radiation Characteristics ◽  
Dielectric Resonator Antennas ◽  
Different Types ◽  
Dielectric Lenses

The radiation characteristics of the dielectric resonator antennas (DRA) is enhanced using different types of solid and discrete dielectric lenses. One of these approaches is by loading the DRA with planar superstrate, spherical lens, or by discrete lens (transmitarray). The dimensions and dielectric constant of each lens are optimized to maximize the gain of the DRA. A comparison between the radiations characteristics of the DRA loaded with different lenses are introduced. The design of the dielectric transmitarray depends on optimizing the heights of the dielectric material of the unit cell. The optimized transmitarray achieves 7 dBi extra gain over the single DRA with preserving the circular polarization. The proposed antenna is suitable for various applications that need high gain and focused antenna beam.

Probe Feed Multi-Element Multi-Segment Triangular Dielectric Resonator Antenna with RCS Analysis

2019 ◽  
Vol 28 (12) ◽  
pp. 1950208
Author(s):  
Pinku Ranjan ◽  
Ravi Kumar Gangwar
Keyword(s):  
Dielectric Resonator ◽  
High Gain ◽  
Dominant Mode ◽  
Similar Type ◽  
Dielectric Resonator Antenna ◽  
General Guideline ◽  
Antenna Performance ◽  
Ansoft Hfss ◽  
Coaxial Probe ◽  
Good Agreement

The aim of the paper is to propose a design and analysis of multi-element multi-segment triangular dielectric resonator antenna (MEMS TDRA) with Radar Cross-Section (RCS). The proposed antenna has been excited through coaxial probe feed. The coaxial probe feed excites TM[Formula: see text] dominant mode fields within the TDR elements. A general guideline for wide bandwidth and high gain has been prepared for designing of MEMS TDRA. The model of the proposed MEMS TDRA has been studied through simulation (Ansoft HFSS software) and fabricated for measurement. The simulated antenna performance has good agreement with the measured one. The proposed MEMS TDRA performance has been compared with some similar type of previously published structure and found wider bandwidth and higher gain. The proposed MEMS TDRA provides monopole-like radiation pattern with nearly 39% bandwidth ([Formula: see text] dB). The average gain of 6.0 dBi has been found over the entire bandwidth. The RCS analysis has been performed for monostatic and bistatic modes at different frequencies and angles. The proposed antenna is appropriate for WLAN and WiMAX applications.

Design and Fabrication of High Gain Multi-element Multi-segment Quarter-sector Cylindrical Dielectric Resonator Antenna

Frequenz ◽  
2017 ◽  
Vol 72 (1-2) ◽  
Author(s):  
Pinku Ranjan ◽  
Ravi Kumar Gangwar
Keyword(s):  
Dielectric Resonator ◽  
High Gain ◽  
Impedance Bandwidth ◽  
Dielectric Resonator Antenna ◽  
Design Guideline ◽  
Bandwidth Enhancement ◽  
Antenna Performance ◽  
Segmentation Approach ◽  
Novel Design ◽  
Selection Of

AbstractA novel design and analysis of quarter cylindrical dielectric resonator antenna (q-CDRA) with multi-element and multi-segment (MEMS) approach has been presented. The MEMS q-CDRA has been designed by splitting four identical quarters from a solid cylinder and then multi-segmentation approach has been utilized to design q-CDRA. The proposed antenna has been designed for enhancement in bandwidth as well as for high gain. For bandwidth enhancement, multi-segmentation method has been explained for the selection of dielectric constant of materials. The performance of the proposed MEMS q-CDRA has been demonstrated with design guideline of MEMS approach. To validate the antenna performance, three segments q-CDRA has been fabricated and analyzed practically. The simulated results have been in good agreement with measured one. The MEMS q-CDRA has wide impedance bandwidth (|S

Pattern Reconfigurable High Gain Spherical Dielectric Resonator Antenna Operating on Higher Order Mode

2019 ◽  
Vol 18 (1) ◽  
pp. 128-132 ◽  
Author(s):  
Byung Kuon Ahn ◽  
Hye-Won Jo ◽  
Jong-Sang Yoo ◽  
Jong-Won Yu ◽  
Han Lim Lee
Keyword(s):  
Dielectric Resonator ◽  
High Gain ◽  
Higher Order ◽  
Dielectric Resonator Antenna ◽  
Order Mode ◽  
Higher Order Mode

A NOVEL 5.8 GHz HIGH GAIN ARRAY DIELECTRIC RESONATOR ANTENNA

2010 ◽  
Vol 15 ◽  
pp. 201-210 ◽  
Author(s):  
Mohd Fadzil Ain ◽  
Yazeed Mohammad Qasaymeh ◽  
Zainal Arrifin Ahmad ◽  
Mohammad Azman Zakariya ◽  
Mohamad Ariff Othman ◽  
...  
Keyword(s):  
Dielectric Resonator ◽  
High Gain ◽  
Dielectric Resonator Antenna
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